......I'I cant find this cd everywhere I have been looking on the internet. obsdlivecdfw381iso

I don't know anything about the ISO image mentioned, but whoever created it is not affiliated with the OpenBSD project.

If you are looking for an OpenBSD environment which does not required installation to a hard disk, you might consider installing (a sanctioned version) OpenBSD to a USB drive. The install script typically used to install to disk is capable to installing to removable media too, however, this also requires that the system be capable of booting from USB as well (older systems may or may not be able to do so).

That's true but this old server pc I will be using, I don't even think a usb stick will run on it: P6S5AT
I want an openbsd firewall that I install and it just works. Oh I found this and I'm wondering if this is even a good idea: Transparent Firewall With OpenBSD VM, setup in ESXi for promiscuous mode. Hes using a ESXi server motherboard but I'm stuck with mine.

I was able to install the Monowall cdrom version with no problem at all. I setup dhcp and typed a new subnet.

So is there a version made just for being a firewall? That's all I really want. And if not is there a very simple method for setting up an openbsd firewall for a beginner that has never used anything with a terminal?

So is there a version made just for being a firewall? That's all I really want. And if not is there a very simple method for setting up an openbsd firewall for a beginner that has never used anything with a terminal?

OpenBSD comes with everything built-in that a "firewall" network gateway device needs: a robust packet filter and a network stack that forwards packets between networks. OpenBSD's packet filter is PF, and the best starting point to learn about it is the PF User's Guide, found on the project website.

Note that this guide is for OpenBSD 5.3, and will not be of use to you if you choose to use OpenBSD 3.8. There have been vast changes between 2005 and today.

But the platform you've chosen doesn't look (to me) like it could be a firewall. Firewall devices sit between networks, and act as gateways. It takes a minimum of two network interface connections (NICs) to have a firewall. One network in, another network out, with the firewall in between the two networks.

Your goals are more likely to be realized if you treat the exercise as a learning experience. jggimi has already mentioned the PF User's Guide. I will add to conversation Hansteen's tutorial on pf(4). Both of these resources are very helpful to understanding how to use OpenBSD's firewall along with the pf(4) manpage itself.